Homeowners are placing fresh rolls of toilet paper inside their refrigerators to combat excess moisture and control indoor condensation during warm summer weather.
The unusual household trick has gained popularity as rising seasonal temperatures and elevated internal humidity make maintaining optimal conditions inside cooling appliances increasingly difficult, according to a report by Kevin Charalla Nájera published on August 15, 2026.
How cellulose fibers absorb internal humidity
Toilet paper is manufactured primarily from cellulose, an organic polymer derived from plant cell walls that features a porous microscopic structure. That structural design enables a dry roll placed on a refrigerator shelf to pull ambient water vapor directly out of the surrounding air through capillary action.
When refrigerator doors are opened and closed frequently during hot months, warm room air enters the cabinet and cools rapidly. As the incoming air reaches its dew point, liquid condensation forms on interior surfaces. Introducing a dry, unused toilet paper roll allows its fibers to capture part of that accumulated moisture, maintaining a drier internal environment.
Cellulose fibers also possess the capacity to trap certain airborne particles responsible for unpleasant food odors. However, the report noted that this odor-absorbing effect remains limited and cannot replace routine appliance cleaning or sanitary food storage.
Practical benefits for home food preservation
Lowering internal moisture levels provides several direct advantages for everyday food storage. Excess liquid condensation on glass shelves and crisper drawers often accelerates produce degradation, causing soft-skinned fruits and leafy vegetables to spoil faster. By capturing floating water vapor, the paper helps preserve food texture for longer periods.
The method serves as a simple and economical alternative to commercial moisture absorbers because it requires no specialized products or synthetic chemicals. A single unrolled paper product provides immediate passive absorption using existing household supplies.
While the trick offers effective supplementary moisture control, it works best alongside established appliance maintenance routines. Passive absorption tools support overall refrigerator care but do not eliminate the need for proper temperature management and food covering.
Standard refrigeration and moisture control
Household refrigerators maintain cold temperatures by circulating refrigerant through cooling coils while fan systems distribute cold air across compartments. When warm, humid summer air breaks the thermal barrier during door openings, moisture management becomes critical to preventing frost accumulation and mold growth on rubber seals.
Standard maintenance guidelines recommend keeping internal refrigerator temperatures between 35 and 38 degrees Fahrenheit while regularly wiping down interior shelves. Using cellulose rolls provides a low-cost secondary measure to keep humidity balanced during peak summer heat.
